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Finding the Fourth Proportional to 514,977.60, 772,466.40 and 487,421.40

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Solution

The fourth proportional to 514,977.60, 772,466.40 and 487,421.40 is: 731,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,977.60 : 772,466.40 = 487,421.40 : x
  2. Step 2: Convert to fraction form
    514,977.60/772,466.40 = 487,421.40/x
  3. Step 3: Cross multiply
    514,977.60x = 772,466.40 × 487,421.40
  4. Step 4: Simplify right side
    514,977.60x = 376,516,654,140.96
  5. Step 5: Solve for x
    x = 376,516,654,140.96/514,977.60
  6. Step 6: Final answer
    x = 731,132.10

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.